Knife blade



FIG. 1 is an upper perspective view of the right side a knife blade illustrating my new design;

FIG. 2 is an upper perspective view of the left side thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is top plan view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a left side elevation view thereof; and,

FIG. 8 is a rear elevation view thereof.

The broken lines shown in the Figures are for illustrative purposes only, and form no part of the claimed design. 

CLAIM I claim the ornamental design for a knife blade, as shown and described. 